Novel porous ceramic sheet supported metal reactors for continuous-flow catalysis.

Area of Science:

• Materials Science
• Environmental Chemistry
• Catalysis

Background:

• Nitroaromatic compounds and methyl orange are common pollutants.
• Efficient and recoverable catalysts are needed for environmental remediation.

Purpose of the Study:

• To develop a novel porous ceramic sheet supported nickel particles reactor.
• To investigate its continuous-flow catalytic performance for pollutant degradation.

Main Methods:

• In-situ preparation of the reactor.
• Characterization using XRD, SEM, XPS, Raman, element mapping, mercury intrusion, and Archimedes principle.
• Catalytic reduction experiments with p-nitrophenol and methyl orange using sodium borohydride.

Main Results:

• The reactor demonstrated excellent catalytic performance, achieving nearly 100% conversion of p-nitrophenol and methyl orange.
• High catalytic efficiency was maintained over 10 recycling times due to reduced nickel particle aggregation.
• The reactor exhibited a strong interaction between nickel and the ceramic support, enhanced by chemisorbed oxygen.

Conclusions:

• The developed reactor is highly efficient, recoverable, and cost-effective for degrading nitroaromatic compounds and methyl orange.
• It offers new opportunities for wastewater treatment and environmental toxicology.
• The porous ceramic support can be utilized for other metal nanomaterials in environmental catalysis.